Thus he writes in his _Enchiridion_: “Surely, if no Christian will dare to say this: It is not of God that showeth mercy, but of man that willeth, lest he should openly contradict the Apostle, it follows that the true interpretation of the saying (Rom. IX, 16): ‘It is not of him that willeth, nor of him that runneth, but of God that showeth mercy,’ is that the whole work belongs to God, who both prepares the good will that is to be helped, and assists it when it is prepared. For the good will of man precedes many of God’s gifts, but not all; and it must itself be included among those which it does not precede. We read in Holy Scripture, both ‘God’s mercy shall prevent me’ (Ps. LVIII, 11), and ‘Thy mercy will follow me’ (Ps. XXII, 6). It precedes the unwilling to make him willing; it follows the willing to render his will effectual. Why are we taught to pray for our enemies, who are plainly unwilling to lead a holy life, unless it be that God may work willingness in them? And why are we admonished to ask that we may receive, unless it be that He who has created in us the wish, may Himself satisfy the same? We pray, then, for our enemies, that the mercy of God may precede them, as it has preceded us; we pray for ourselves, that His mercy may follow us.”(340) That grace accompanies us uninterruptedly on the way to Heaven is also the teaching of St. Jerome: “To will and to run is my own act; but without the constant aid of God, even my own act will not be mine; for the Apostle says (Phil. II, 13): ‘It is God who worketh in you, both to will and to accomplish.’... It is not sufficient for me that He gave it once, unless He gives it always.”(341) St. Ephraem Syrus prays in the name of the Oriental Church: “I possess nothing, and if I possess anything, Thou [O God] hast given it to me.... I ask only for grace and acknowledge that I shall be saved through Thee.”(342) The Second Council of Orange summarizes the teaching of Tradition on the subject under consideration.(343) c) The theological argument for our thesis is based on the character of the adoptive sonship resulting from the process of justification.(344) This sonship (_filiatio adoptiva_) is essentially supernatural, and hence can be attained only by strictly supernatural acts, which unaided nature is both morally and physically incapable of performing.(345) *Thesis III: Even in the state of sanctifying grace man is not able to perform salutary acts, unless aided by actual graces.* This is likewise _de fide_. Proof. The faculties of the just man are permanently kept in the supernatural sphere by sanctifying grace and by the habits of faith, hope, and charity. Hence the just man in the performance of salutary acts does not require the same measure of prevenient grace as the unregenerate sinner, who lacks all, or at least some, of the habits mentioned.